单相有源电力滤波器拓扑结构的分析研究

Study on topologies of a single-phase active power filter

有源电力滤波器(APF)是现今治理谐波效果最好的补偿装置之一,但由于成本高,难于得到广泛应用。本文在对常规拓扑结构的有源电力滤波器的分析基础上,提出了两种新的拓扑结构———单桥臂带直流电容与不带直流电容拓扑结构,同时提出简单的控制策略。MATLAB仿真研究表明,单桥臂带直流电容拓扑结构的有源滤波器综合效果优于其他两种有源滤波器,该滤波器结构简单、成本低、易于推广使用。

Today, active power filter （APF） is one of the most effective compensation device for governing harmonics, but it is difficult to be widely used for its high cost. In this paper, the conventional topology of APF is analyzed first, and then forward two new topology -- single-arm bridge with DC capacitor and non-DC capacitor topology, and raise a simple control strategy.The MATLAB simulation studies show that the APF of single-arm bridge with DC capacitor topology is better than the other two active filters in combined effects. The filter is simple, low cost, and easy to use.